<template>
  <div>
    <div>
      <el-input style="width: 200px" placeholder="查询名称" v-model="name"></el-input>
      <el-button type="primary" style="margin-left: 10px" @click="load(1)">查询</el-button>
      <el-button type="info" @click="reset">重置</el-button>
    </div>
    <div style="margin: 10px 0">
      <el-button type="primary" plain @click="handleAdd">新增</el-button>
      <el-button type="danger" plain @click="delBatch">批量删除</el-button>
    </div>
    <el-table :data="tableData" stripe :header-cell-style="{ backgroundColor: 'aliceblue', color: '#666' }" @selection-change="handleSelectionChange">
      <el-table-column type="selection" width="55" align="center"></el-table-column>
      <el-table-column prop="id" label="序号" width="70" align="center"></el-table-column>
      <el-table-column prop="no" label="订单编号"></el-table-column>
      <el-table-column prop="name" label="订单名称"></el-table-column>
      <el-table-column prop="money" label="订单金额" show-overflow-tooltip></el-table-column>
      <el-table-column prop="user" label="用户"></el-table-column>
      <el-table-column prop="date" label="创建时间"></el-table-column>

      <el-table-column label="操作" align="center" width="180">
        <template v-slot="scope">
          <el-button size="mini" type="primary" plain @click="handleEdit(scope.row)">编辑</el-button>
          <el-button size="mini" type="danger" plain @click="del(scope.row.id)">删除</el-button>
        </template>
      </el-table-column>
    </el-table>

    <div style="margin: 10px 0">
      <el-pagination
          @current-change="handleCurrentChange"
          :current-page="pageNum"
          :page-size="pageSize"
          layout="total, prev, pager, next"
          :total="total">
      </el-pagination>
    </div>

    <el-dialog title="订单信息" :visible.sync="fromVisible" width="40%" :close-on-click-modal="false">
      <el-form :model="form" label-width="80px" style="padding-right: 20px" :rules="rules" ref="formRef">
        <el-form-item label="订单名称" prop="name">
          <el-input v-model="form.name" placeholder="标题"></el-input>
        </el-form-item>
        <el-form-item label="订单金额" prop="money">
          <el-input v-model="form.money" placeholder="金额"></el-input>
        </el-form-item>
        <el-form-item label="分类" prop="category">
         <el-select style="width:100%" v-model="form.category">
           <el-option v-for="item in ['水果','蔬菜','零食']" :key="item" :value="item"></el-option>
         </el-select>
        </el-form-item>
      </el-form>

      <div slot="footer" class="dialog-footer">
        <el-button @click="fromVisible = false">取 消</el-button>
        <el-button type="primary" @click="save">确 定</el-button>
      </div>
    </el-dialog>

  </div>
</template>

<script>

export default {
  name: "Orders",
  data() {
    return {
      tableData: [],  // 所有的数据
      pageNum: 1,   // 当前的页码
      pageSize: 5,  // 每页显示的个数
      username: '',
      name: '',
      total: 0,
      fromVisible: false,
      form: {},
      user: JSON.parse(localStorage.getItem('honey-user') || '{}'),
      rules: {
        name: [
          { required: true, message: '请输入名称', trigger: 'blur' },
        ],
        money: [
          { required: true, message: '请输入金额', trigger: 'blur' },
        ],
        category: [
          { required: true, message: '请输入分类', trigger: 'blur' },
        ]
      },
      ids: [],
      money: '',
    }
  },
  created() {
    this.load()
  },
  methods: {
    delBatch() {
      if (!this.ids.length) {
        this.$message.warning('请选择数据')
        return
      }
      this.$confirm('您确认批量删除这些数据吗？', '确认删除', {type: "warning"}).then(response => {
        this.$request.delete('/orders/delete/batch', { data: this.ids }).then(res => {
          if (res.code === '200') {   // 表示操作成功
            this.$message.success('操作成功')
            this.load(1)
          } else {
            this.$message.error(res.msg)  // 弹出错误的信息
          }
        })
      }).catch(() => {})
    },
    handleSelectionChange(rows) {   // 当前选中的所有的行数据
      this.ids = rows.map(v => v.id)
    },
    del(id) {
      this.$confirm('您确认删除吗？', '确认删除', {type: "warning"}).then(response => {
        this.$request.delete('/orders/delete/' + id).then(res => {
          if (res.code === '200') {   // 表示操作成功
            this.$message.success('操作成功')
            this.load(1)
          } else {
            this.$message.error(res.msg)  // 弹出错误的信息
          }
        })
      }).catch(() => {})
    },
    handleEdit(row) {   // 编辑数据
      this.form = JSON.parse(JSON.stringify(row))  // 给form对象赋值  注意要深拷贝数据
      this.fromVisible = true   // 打开弹窗
    },
    handleAdd() {   // 新增数据
      this.form = {}  // 新增数据的时候清空数据
      this.fromVisible = true   // 打开弹窗
    },
    save() {   // 保存按钮触发的逻辑  它会触发新增或者更新
      this.$refs.formRef.validate((valid) => {
        if (valid) {
          this.sendSaveRequest()
        }
      })
    },
    sendSaveRequest() {
      this.$request({
        url: this.form.id ? '/orders/update': '/orders/add',
        method: this.form.id ? 'PUT' : 'POST',
        data: this.form
      }).then(res => {
        if (res.code === '200') {  // 表示成功保存
          this.$message.success('保存成功')
          this.load(1)
          this.fromVisible = false
        } else {
          this.$message.error(res.msg)  // 弹出错误的信息
        }
      })
    },
    reset() {
      this.name = ''
      this.load()
    },
    load(pageNum) {  // 分页查询
      if (pageNum)  this.pageNum = pageNum
      this.$request.get('/orders/selectByPage', {
        params: {
          pageNum: this.pageNum,
          pageSize: this.pageSize,
          name: this.name
        }
      }).then(res => {
        this.tableData = res.data.records
        this.total = res.data.total
      })
    },
    handleCurrentChange(pageNum) {
      this.load(pageNum)
    },
  }
}
</script>

<style scoped>

</style>